Copper sulphate is produced from the depleted solution from electrolytic copper refining.
CuSO4*5H2O is water-soluble light blue or cyan hydroscopic crystals.
The copper sulphate is used for ore flotation at Coppers Concentrators, for struggle with agricultural pests, production of artificial fibers, organic dyes, mineral paints, arsenic chemicals.
Copper sulphate is referred to medium toxic insecticide-pesticide, fire-safe and non-explosive as well.
| Description of property | Standard for А 1Grade | |
| 1 | Mass fraction of copper sulphate: | |
| on conversion to CuSO4*5H2O, %, not less | 98,0 | |
| on conversion to copper, %, not less | 24,94 | |
| 2 | Mass fraction of Fe, %, less than | 0,04 |
| 3 | Mass fraction of free sulfuric acid, %, less than | 0,25 |
| 4 | Mass fraction of water insoluble residue, %, less than | 0,05 |
| 5 | Mass fraction of arsenic, %, less than | 0,012 |